<template>
	<div>
		<div class="search">
			<input class="search-input" 
				   type="text" 
				   placeholder="输入城市名或拼音" 
				   v-model="keyword"
			/>
		</div>
		<div class="search-content" ref="search" v-show="keyword">
			<ul>
				<li v-for="item of list" 
					:key="item.id"
					class="search-item border-bottom"
					@click="handleCityClick(item.name)"
				>
					{{item.name}}
				</li>
				<li class="search-item border-bottom" 
					v-show="hasNoData">
					没有找到匹配数据
				</li>
			</ul>
		</div>
	</div>
</template>

<script>
import Bscroll from 'better-scroll'
import {mapMutations} from 'vuex'
export default{
  name:'CitySearch',
  props:{
  	cities:Object,
  },
  data(){
  	return{
  		keyword:'',
  		list:[],
  		timer:null
  	}
  },
  methods:{
  	handleCityClick(city){
  		//this.$store.commit('changeCity',city)
  		this.changeCity(city)
  		this.$router.push('/')
  	},
  	...mapMutations(['changeCity'])
  },
  watch:{
  	keyword (){
  		if(this.timer){
  			clearTimeout(this.timer)
  		}
  		if(!this.keyword){
  			this.list=[]
  			return
  		}
  		this.timer=setTimeout(()=>{
  			const result=[]
  			for(let i in this.cities){
  				this.cities[i].forEach((value)=>{
  					if(value.spell.indexOf(this.keyword)>-1||
  					value.name.indexOf(this.keyword)>-1){
  						result.push(value)
  					}
  				})
  			}
  			this.list=result
  		},100)
  	}
  },
  mounted(){
  	this.scroll=new Bscroll(this.$refs.search,{ mouseWheel: true, click: true, tap: true })
  },
  computed:{
  	hasNoData(){
  		return !this.list.length
  	}
  }
}
</script>

<style lang="stylus" scoped>
.search
  height:.72rem
  background-color:#00bcd4
  padding:0 .1rem
  .search-input
    height:.62rem
    line-height:.62rem
    width:100%
    text-align:center
    border-radius:.06rem
    box-sizing:border-box
    padding:0 .1rem
.search-content
  z-index:1
  overflow:hidden
  position:absolute
  top:1.58rem
  left:0
  right:0
  bottom:0
  background:#eee
  .search-item
    line-height:.62rem
    color:#666
    padding-left:.2rem
    background:#fff
</style>